Lightweight sadiron construction



Feb. 1, 1938. H. A. SMITH LIGHTWEIGHT SADIRON CONSTRUCTION Filed July16, 1935 Patented Feb. 1, 1938 UNITED STATES 2.100.930 moiirwaicn'r,sanmon CONSTRUCTION HowardA. Smith, St. Louis, Mo., assiguor toKnapp-Monarch Company, St. Louis, Mo., a

corporation of Missouri Applicationlnly 1a, 1935, Serial No. 31,613

8Claims. (01.219

An object of my invention is to provide a light weight sad ironconstruction having parts of simple, durable and inexpensiveconstruction, which are readily assembled and retained in assembly withbut very few fastening parts.

A further object is to provide a light weight sad iron construction;comprising a sole plate having a heating element groove, a heatingelement being provided in the groove and retainedin position by a sheetmetal plate rather than the usual weight member, so that a light weightiron is thus produced, the sheet metal plate being preferably retainedin position by a simple fastening element adjacent its center driveninto'a socket of the sole plate.

Still another object is to provide a novel terminal pin assembly, whichis assembled under tension relative to the shell and supported therebyand to provide a rest member and protector for the terminal pin, whichis also secured under tension to the shell.

With these and other objects in view, my invention consists in theconstruction, arrangement and combination of the various parts of mylight weight sad iron construction, wherebythe objects contemplated areattained, as hereinafter more fully set forth, pointed out in my claims,and illustrated in the accompanying drawing, in which:

Figure 1 is a vertical, longitudinal, sectional view through a lightweight sad iron embodying my invention.

Figure 2 is a horizontal sectional view on the line 2--2 of Figure l. m

Figure 3 is a sectional view of a portion of Figure 1, showing the partsduring assembly, and particularly a terminal. assembly being assembledrelative to the shell of the iron.

Figure 4 is a similar sectional view'showing a On the accompanyingdrawing, I have used the reference numeral ill to indicate-a sole"plate. It is provided with a heating element groove, in

which is a heating element i4 comprising pref-.-

erably a coiled resistor embeddedin refractory material.

The heating element It 'is retained in position by a sheet metal plateI6 which in turn is secured to the sole plate III by a headed pin i8.The pin I8 is made of brass or the like, and is a drive fit in a socket20 of the sole plate In, so

as to be frictionally held therein after the simple operation of drivingit home, instead of having to use screws as in the ordinary manner.

The sole plate i0 is provided with a boss 22 having a threaded socket24. vThe sheet metal plate i6 is provided with a perforation 28 throughwhich the boss extends.

A shell28 is mounted on the sole plate l8 and held in mounted positionby a screw 38. The

upper end of the screw 30 extends through a perforation 32 in the shell28 and is screwed into the socket 24. 1

A handle yoke 34 is provided having a perforation 36 for the screw 30 toextend through. The shell 28 is provided with a pair of perforations 58into which projections 40 of the handle yoke 88 extend. .This preventsthe handle yoke from turning relative to the screw 30 and the screwprovides a single means for retaining the handle yoke in position. Ahandle 42 is mounted on the yoke 34.

The sheet metal plate It has a pair of perforations 44 inwhichinsulators 46 are located.

The ends 48 of the heating element extend through the insulators l8 andare insulated by them from contact with the sole plate and the sheetmetal plate.

The heating element ends 48 are connected with terminal pins 50, whichare mounted on and insulated from a terminal pin support A shown inFigure 6. The support A comprises a. plate portion 52 dished andterminating in a flange El.

'A portion 56 of the flange 54 is displaced so as to provide a yoke-likeconstruction at the front of the support A. The support A also includesan arm 58 terminating in a lug 60.

The shell 28 has a pair of walls indicated at 28a and 28b, which arearranged at an angle relative to each other. The wall 28a is providedwith a terminal pin opening 62 closed by the plate portion 52 of thesupport A when in assembled posi-' tion and'through which the terminalpins extend. 1

The yoke portion provided by the flange 54 and -'the offset portion 56thereof and the lug are initially formed a greater distance apart thanthe forward edge of the terminal pin opening 52 and a perforation 64 inthe wall 2811.

To assemble the support A relative to the shell 2a,. the yoke portion isfirst engaged with the front edge of the terminal opening 52 as in Fig--'ure' 3, andg the arm 58 issprung by a tool indicatedat 66 in thedirection of the arrow 0, so that the lug'ill can enter the perforationBI. and

thereafter the arm- 58 will spring to its original 68, an arm portion10, and side flanges l2 and M. The flanges 14 terminate in hooked lugs16 adapted to hook into the perforations 18 of the wall 28a of the shell28. The flanges 12 are provided with forwardly extending lugs v adaptedto enter perforations 82 of the wall 28b, by first placing the restmember in the position shown in Figure 4, and then swinging it asindicated by the arrow l2 until the dotted position of Figure 1 isassumed. Thereafter the widened foot portion 68 is sprung downwardly tothe full line position, and the lugs as bent over laterally inside theshell to thus connect the rest member under tension with the shell.

The angle of the forward and lower edges of the flanges and itrespectively is slightly less acute than the angle of the walls 28a and28b as illustrated the dotted lines in Figure 1 so that when the fullline position is assumed, the parts are under tension.

The terminal assembly and rest member, it will be noted, are of simpleconstruction, and the assembly thereof relative to the shell takes but aminimum of time. I am thus able to produce a sad iron which is light inweight and also inexpensive, because assembly of the parts and thematerial required for the parts is thus reduced to the minimum.

Some changes may be made in the arrangernent and construction of thevarious parts of my light weight sad iron construction, withoutdeparting from the real spirit and purpose of my invention, and it is myintention to cover by my claims, any modified forms of structure or useof mechanical equivalents, which may be reasonably included within theirscope.

I claim as my invention:

1. In an electric appliance having a heating element and a shell, aterminal assembly for said heating element comprising an elongated plateportion having a pair of termin'als thereon and spaced longitudinallythereof, and an arm portion extending from one side thereof and arrangedat an angle relative to the plane of said plate portion, the oppositeside of said plate portion and the outer end of said arm portionengaging spaced parts of said shell under stress to support saidterminal assembly relative to said shell.

2. In an electric appliance having a heating element and a shell, aterminal assembly for said heating element, comprising a plate portion,and an arm portion arranged at an angle relative to each other, oppositeends of said terminal assembly having lugs, said shell having spacedperforations to coact with said lugs, the parts of said perforationswith which said lugs coact being spaced closer together than thedistance apart of said lugs, whereby said terminal assembly aftercoactipn with said shell remains in coaction therewith, under stress.

:3. In an electric appliance having a heating element and a shell, aterminal assembly for said heating element, comprising an elongatedterminal pin supporting portion, andanarmportion extending from the sideof said pin supporting portion, said shell having a terminal pinopening, said terminal pin supporting portion closing said opening andhaving a portion at its side opposite said arm portion engaging the sideof said opening, said shell having another perforation, a portion ofsaid arm coacting with said other perforation to retain said terminalpin assembly supported relative to said shell.

4. In an electric appliance having a heating element and a shell, 9.terminal assembly for said heating element comprising an arm portion anda dished terminal pin supporting portion having a peripheral flange, aportion of said flange opposite said arm being displaced whereby to forma yoke portion, said shell having a terminal pin opening, said yokeportion receiving the edge of said opening and said terminal pinsupporting portion closing the opening, said shell having anotherperforation, a portion of said arm coacting with said other perforationto retain said terminal pin assembled relative to said shell.

5. In an electric appliance having a heating element and a shell, 2.terminal assembly for said heating element comprising an arm portion anda dished terminal pin supporting portion having a peripheral flange, aportion of said flange opposite said arm being displaced whereby to forma. yoke portion, said shell having a terminal pin opening, said yokeportion receiving the edge of said opening and said terminal pinsupporting portion closing the opening, said shell having anotherperforation, a portion of said arm coacting with said other perforationto retain said terminal pin assembled relative to said shell, said yokeportion and said arm portion where they engage said shell being formed agreater distance apart than the distance between said portions of saidshell, whereby to place said terminal pin. assembly under stress when itis assembled relative to said shell.

6. In an electric appliance having a heating element and a shell, aterminal assembly for said heating element comprising a T-shapedstamping having the leg thereof arranged at an angle relative to theplane of the arms thereof, a terminal pin supported by each of saidarms, the top of said T-shaped stamping and the lower end of said legengaging spaced parts of said shell under stress to support saidterminal assembly relative to said shell.

7. In an electric appliance having a heating element and a shell, aterminal assembly for said'heating element comprising a stamping havinga pair of portions arranged at an angle relative to each other, terminalpins supported by one of said portions, opposite ends of said terminalassembly having lugs, said shell having spaced perforations to coactwith said lugs, the parts of said perforations with which said lugscoact being spaced closer together than the distance apart of said lugs,whereby said terminal assembly after coaction with said shell remains incoaction therewith under stress.

8, In an electric appliance having a heating element and a shell, 9.terminal assembly for said heating element comprising an arm portion anda terminal pin supporting portion, said shell having a terminal pinopening, said terminal pin supporting portion closing the opening, meansat the edge of said terminal pin supporting portion for engaging theedge of said opening, said shell having another perforation, a portionof said arm coacting with said other perforation to retain. saidterminal pin assembly relative to said shell in conjunction with saidmeans engaging the edge of said terminal pin opening.

HOWARD A. SMITH.-

